Flex :: Binding To An MXML-esque "binding String"?

Oct 13, 2009

Is it possible to specify MXML-esque "binding strings" in ActionScript?For example, I want to be able to do something like:

MXMLBinding(this, "first_item",
this, "{myArrayCollection.getItemAt(0)");
MXMLBinding(this, ["nameLbl", "text"],

[code].....

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Jun 2, 2010

Is it possible to set a percentage value for the width property of an UIComponent defined in MXML using data binding?

What I try to achieve is something like this (which doesn't work):

<s:Button width="{buttonWidth}%"/>

I know that using percentage for width or height properties in MXML is kind of a hack in the Flex SDK, since they're supposed to accept numerical values only, but since percentWidth and percentHeight aren't available in MXML, I'm pretty stuck =/

I would really like to avoid using code to do such a simple thing, in order to keep my code as clear and readable as posible.

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Actionscript 3 :: Three Way Binding In MXML Custom Component (using Only Mxml)

Jun 22, 2011

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Set Variables In MXML While Avoiding Data Binding?

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I love MXML but am starting to notice some of its drawbacks. The main one I'm struggling with is its larger memory usage due to the need for binding. In the super simple code snippet below, which I've tested on Flex 4.0[code]...

My main question: is there any way to set variables in MXML that doesn't eat up memory? I'm aware that I can do this explicitly in AS and keep MXML as a bare bone structure but was wondering if there was an alternative path.

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ActionScript 3.0 :: Binding MXML Control To Object Property

Nov 17, 2009

I have no success binding mxml control to AC3 object property. I'm new to AC3/Flex and assume my aproach is kinda "Javascript like" and might be completely wrong. Here's mxml (don't pay attention to mistypes/syntax errors):

HTML Code:
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Sep 14, 2010

I have this variable in Model class:[code]I've used BindingUtils to get notified when the XML changes:[code]Function onChange gets triggered when I assign an XML to the variable, but not when I change some attribute of the XML: Model.getInstance().someXml.@attr = "newValue";

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Flex :: Conditional Data Binding?

Oct 8, 2009

first one shows playheadtime of videodisplay and another is also used for same purpose. the difference is that when we are in add mode(decided from a flag variable) both should show current playheadtime using binding. but when we are in edit mode(again decided from flag) the latter label should remain static, to be more specific, the value retrived from database.how can I do that using actionscript. I tried ChangeWathcer but I found it a bit tricky. Is there any other simpler way or am I missing something. following is my code.

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Flex :: Binding Key / Value Pairs Loaded From Xml

Mar 12, 2010

I want to load key/values configuration pairs stored in XML file. To bind a collection of data i know i need to use the ArrayList class, but the problem is that i want to be able to bind the loaded values using their corresponding keys and not by their indexes in the ArrayList object. For example i want to be able to do this :

[Code]...

So the question is how to bind the key/value pairs loaded form XML. I don't want to go manually set variables, i want to bind them so when they are loaded the are set automatically. Did anyone had to do something like that ?

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AS3 :: Use Flex's Binding In A Flash Project?

Apr 7, 2010

I have a flash app using the flex framework - I would like to bind a display object textField with data from my dataModel.

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Flex :: Binding Applies Only To One ArrayCollection?

Apr 15, 2010

I have a datagrid that gets its data from a webservice.When data from the webservice is retrived it calls the following function:

private function onListReg():void
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[code].....

The intent is when I hit a update button, it compares arrRegOld with arrReg and see if any values have changes. The problem is whenever I change values on the Datagrid it changes on both the dataProvider and on both ArrayCollections.What should I do so that the binding applies only to one ArrayCollection?

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May 3, 2010

I'm having some troubles with binding data. I have an application that contains a viewstack of components. Let's say I have comp1, comp2 and comp3 inside the viewstack. Each component, has its own data class --> comp1Data.as, comp2Data.as and comp3Data.as. All values in each component are binded to the corresponding data in it's data object.

A click in a control in comp1 leads to comp3, the same goes for comp2. Clicking a control in comp2 leads to comp3. When going from comp1 to comp3, comp3Data.as is initialized and and comp3 displays the binded values. When going from comp2 to comp3, comp3Data.as is also initialized but the binded values are not displayed...

[Code]...

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Flex :: Binding To Arraycollection Does Not Work?

May 23, 2010

I am using flex SDK 3.5. I have model.as and in it i have an ArrayCollection (name it arr_mod) which is Bindable.

From my mxml i link to this arr_mod in three places:
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2) in Button i add new item to the arr_mod this way: mx:Button .. click = "{arr_mod.addItem(new Item)}"

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Aug 20, 2010

I'd like to add a derived property to flex:[code]However, derived won't update when I change a or b.Is there a better (faster) way to make derived update than giving a and b setter methods which invalidate it?added keyword "get".This makes more sense now, I hope.

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Flex :: Binding ComboBox To XML Children?

Sep 9, 2010

I have created a really simple example for what I am trying to achieve, which you can see below.

<?xml version="1.0" encoding="utf-8"?>
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[Code]....

So it is important for me to bind to the children().

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Actionscript 3 :: Flex 4 Binding To Mx:Image?

Dec 23, 2010

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Actionscript 3 :: How To Remove A Binding In Flex 4.5

Aug 26, 2011

I have this Code:
BindingUtils.bindProperty(trollImage, "width", vslider, "value");
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[code]......

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Dec 13, 2011

i have in my main application:

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[Code]...

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Jul 17, 2010

I've been kinda stuck in trying to organize data and bind them to a Repeater in one my applications.What I did at first, was to save an array of arrays, so that I could've accessed any value very easily. But then I realized that I needed to bind them to a Repeater, so I had to switch to an ArrayCollection of arrays. But the Binding issues weren't solved, since there are still arrays (not bindable) inside the ArrayCollection.Below an example of what I want to do:

<mx:Script>
<![CDATA[
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[code]....

the traces show that the array size changes, but the repeater doesn't update.

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Sep 5, 2009

I have several components where I want to enable buttons based on passing a username to a function. I want to dynamically bind the "enabled" property on a button so that if the "somethingChanged" event fires, a button may become enabled or disabled. But, I'm not sure where to fire the "somethingChanged" event. It's possible that I may need to fire the "somethingChanged" event from several places in the application. Is this possible with a bound static function?

EventManager.as
public class EventManager():void {
[Bindable(event="somethingChanged")]
public static function hasAccess(myVal:String):Boolean {
}}
[Code] .....

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Flex :: Checkbox Visibility Binding In Repeater?

Nov 20, 2009

I am trying to dynamically bind the visibility of a checkbox control to a data field of a repeater as follows.

[Code]...

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Flex :: Create A Bidirectional Data Binding In 3?

Nov 23, 2009

I need to bind a property to an edit control and have the control write its value back to the same property. The problem is, I'm setting the source value before the control is created:

<mx:Panel>
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[code].....

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Mar 30, 2010

I'm using Flex with Cairngorm framework.I have a custom component which I create like this:

<components:FriendSearchPaginator id="searchResultsPaginator"
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Where the findFriendsPaginationElement is inside the model locator:

public var
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Inside the custom component I have button that uses a property of findFriendsPaginationElement object:

<s:Button id="previousButton"
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But I get a warning from Flex that the binding wouldn't work that way and it doesn't. It works the first time I load up the component but every time I change findFriendsPaginationElement it doesn't reflect on the component. Do you know how I can go about doing this? (making changing a value in the binding variable changes the status of an element inside a component?)

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Flex :: Binding ArrayCollection Result To DataGrid

Jun 29, 2010

I am trying to bind an ArrayCollection result coming in from the server to my DataGrid
created dynamically in AS. The result data is not getting Displayed in the Grid.
var dg:DataGrid = new DataGrid();
dg.width=650;
dg.dataProvider=someArrayCollfromServer;

I am adding the dgColumn as runtime based on some data from a XML and it is the same as defined in below static format. But if I use the same code and create the DataGrid as a Flex Component as below, it works fine.
<mx:DataGrid id="dg" width="100%" height="100%" dataProvider="{someArrayCollfromServer}">
<mx:columns>
<mx:DataGridColumn dataField="Value" headerText="Value"/>
<mx:DataGridColumn dataField="Code" headerText="Code" />
</mx:columns>
</mx:DataGrid>

This works fine. Is there some functionality or implementation different as far as DataGrid is concerned in Flex and AS.

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Binding - Flex ChangeWatcher Doesn't Work?

Jul 9, 2010

I'm trying to implement a binding between some custom-built models and just beginning to dabble with the whole mx.binding.* collection. I tried this simple, stripped down example, but can't get the binding working correctly. Can somebody tell me where I'm going wrong?

[Code]...

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Flex :: Two Way Data Binding In AS Causes Stack Overflow

Jul 21, 2010

I'm binding two AutoCompleteModified objects to one another; meaning you type in one and it selects the correct object in the other. It works fine when I define it in MXML: However, a user can add a new row to a Grid and then I set up the binding and objects via actionscript and it gives an 'undefined' error:
ChangeWatcher line 427/wrapHandler.

var innerHBox:HBox = new HBox();
var dtc_acm:AutoCompleteModified = new AutoCompleteModified();
dtc_acm.dataProvider = data2;
dtc_acm.labelField = 'id';
var cp_acm:AutoCompleteModified = new AutoCompleteModified();
[Code] .....

If I only keep it 1-way binding then it works fine. But both throw this error. Is there something about not only doing it 2-way in actionscript, but adding components that aren't on the stage yet?

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Flex :: Does Data Binding Work With The UITextField

Oct 1, 2010

Does data binding work with the UITextField? Unfortunately, I'm getting the variable instead of the bound data.

[Bindable]
public var myString:String;

in a function, where tf is a UITextField:

myString = "blah blah blah";
blah blah...
tf.text="{myString}";

It's giving me {myString} instead of its data.

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Flex :: Mockolate : Dispatch Binding Events?

Nov 8, 2010

Is it possible to ask Mockolate to dispatch binding events?For example, given this class:

class Person {
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Feb 4, 2011

Let me start off by saying this is my first Flex project, so I've been reading a lot, learning a lot, but am still struggling to make this work. I am trying to display records from an SQLite database within my Flex mobile application. I have the input form saving data correctly to the database, and I have a datagrid that is outputting the records (so I can confirm everything looks good). However, my problem is making the data readable.

I want the user to be able to select an identifier from either a drop down or a list (even if it's just a 1 column datagrid), and have the labels to the right update to reflect that information.

[Code]...

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Flex :: Data Binding - ComboBox And XML List

Mar 19, 2011

I have a bit of a problem (since I'm not used to binding with AS3), the thing is that I want to do this kind of data binding:

<mx:Application xmlns:mx="[URL]"
layout="vertical"
verticalAlign="middle"
backgroundColor="white">
[Code] .....

But the ComboBoxes are being created dynamically with AS3, everything is working except I cant bind the second ComboBox dataProvider to be the XMLList in the first ComboBox's selectedItem.

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Flex :: Binding The Value Of A Variable To A Text Input

Apr 12, 2011

Is it possible to have the value of some string variable bound to the text inside a text input control? To clarify, whatever text was entered into the text input would be stored as the value of the variable.

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